M3L2815S Datasheet, PDF (1/11 Pages) International Rectifier – ADVANCED ANALOG HIGH RELIABILITY RADIATION TOLERANT DC/DC CONVERTERS

PD - 94519A
L-SERIES
ADVANCED ANALOG
+ 28V Input, Single/Dual Output
HIGH RELIABILITY RADIATION
TOLERANT DC/DC CONVERTERS
Description
The L-Series of DC/DC converters are radiation toler-
ant, high reliability devices designed for moderate ra-
diation environments such as those encountered by low
earth orbit satellites and launch vehicles. For higher
radiation environments, the G-Series of DC/DC con-
verters is recommended. Features include small size,
low weight and a high tolerance to total ionizing dose,
single event effects and environmental stresses such as
temperature extremes, mechanical shock, and vibration.
All components are fully derated to meet the require-
ments of MIL-STD-975 and MIL-STD-1547 and GSFC
PPL-21 Appendix B. Extensive documentation includ-
ing Radiation Susceptibility, Thermal Analysis, Stress
Analysis and MTBF are available.
The converters incorporate a fixed frequency single for-
ward topology with magnetic feedback and an internal
EMI filter. These converters are capable of meeting the
conducted emissions and conducted susceptibility re-
quirements of MIL-STD-461C without any additional
components. All models include an external inhibit port
and have an adjustable output voltage. They are en-
closed in a hermetic 1.5" x 2.3" x 0.425" steel package
and weigh less than 85 grams. The package utilizes
rugged ceramic feed-through copper core pins and is
sealed using parallel seam welding.
Full environmental screening includes temperature cy-
cling, constant acceleration, fine and gross leak, and
burn-in.
Non-flight versions of the L-Series converters are avail-
able for system development purposes. Variations in
electrical specifications and screening to meet custom
requirements can be accommodated.
Features
n Total Dose > 25K Rad(Si)
. n SEE > 37 MeV cm²/mg
n Internal EMI filter; Converter Capable of
meeting MIL-STD-461C CE03 and CS01
n Low Weight, < 85 grams
n Magnetically Coupled Feedback
n 16V to 50V DC Input Range
n Up to 25W Output Power
n Single and Dual Output Models Include
3.3, 5, 12, 15, ±5, ±12 and ±15V
n High Efficiency - to 82%
n -55°C to +125°C Operating Temperature
Range
n 100MΩ @ 500VDC Isolation
n Under-Voltage Lockout
n Short Circuit and Overload Protection
n Output Over Voltage Limiter
n Adjustable Output Voltage
n External Inhibit
n 1,500,000 Hour MTBF
Applications
n Low Earth Orbit Satellites (LEO)
n Launch Vehicles
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08/20/02